import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie

NProgress.configure({ showSpinner: false }) // NProgress Configuration

// permission judge function
function hasPermission (roles, permissionRoles) {
    if (permissionRoles != undefined) {
        return roles.some(role => permissionRoles.indexOf(role) >= 0)
    } else {
        return false
    }
}

const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist

router.beforeEach((to, from, next) => {
    NProgress.start() // start progress bar
    if (getToken()) {
        if (to.path === '/login') {
            next({ path: '/' })
            NProgress.done() // if current page is dashboard will not trigger	afterEach hook, so manually handle it
        } else {
            if (store.getters.roles.length === 0) {
                // 判断当前用户是否已拉取完user_info信息
                store
                    .dispatch('GetUserInfo')
                    .then(res => {
                        // 拉去用户信息
                        const roles = ["admin"]
                        store.commit('SET_ROLES', roles)
                        store.dispatch('GenerateRoutes', { roles }).then(accessRoutes => {
                            router.addRoutes(accessRoutes) // 动态添加可访问路由表
                            next({ ...to, replace: true })
                        })

                    })
                    .catch(err => {
                        store.dispatch('FedLogOut').then(() => {
                            Message.error(err)
                            next({ path: '/' })
                        })
                    })
            }
            else {
                // 没有动态改变权限的需求可直接next() 删除下方权限判断 ↓
                if (to.meta.roles == null) {
                    next()
                } else if (hasPermission(store.getters.roles, to.meta.roles) === false) {
                    next({ path: '/401', replace: true, query: { noGoBack: true } })
                } else {
                    next()
                }
            }
        }
    } else {
        /* has no token*/
        if (whiteList.indexOf(to.path) !== -1) {
            // 在免登录白名单，直接进入
            next()
        } else {
            // next(`/login?redirect=${to.path}`)
            next(`/login`) // 否则全部重定向到登录页
            NProgress.done() // if current page is login will not trigger afterEach hook, so manually handle it
        }
    }
})

router.afterEach(() => {
    NProgress.done() // finish progress bar
})
